TypeLoadException.TypeName Property

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

TypeLoadException.cs

Gets the fully qualified name of the type that causes the exception.

public:
 property System::String ^ TypeName { System::String ^ get(); };

public string TypeName { get; }

member this.TypeName : string

Public ReadOnly Property TypeName As String

Property Value

String

The fully qualified type name.

Examples

The following example attempts to load a non-existent type from the mscorlib assembly. The resulting exception is caught, and the TypeName and Message values are displayed. For this code example to run, you must provide the fully qualified assembly name. For information about how to obtain the fully qualified assembly name, see Assembly Names.

// Load the mscorlib assembly and get a reference to it.
// You must supply the fully qualified assembly name for mscorlib.dll here.
Assembly^ myAssembly = Assembly::Load( "Assembly text name, Version, Culture, PublicKeyToken" );
try
{
   Console::WriteLine( "This program throws an exception upon successful run." );
   
   // Attempt to load a non-existent type from an assembly. 
   Type^ myType = myAssembly->GetType( "System.NonExistentType", true );
}
catch ( TypeLoadException^ e ) 
{
   // Display the name of the Type that was not found.
   Console::WriteLine( "TypeLoadException: \n\tError loading the type '{0}' from the assembly 'mscorlib'", e->TypeName );
   Console::WriteLine( "\tError Message = {0}", e->Message );
}
catch ( Exception^ e ) 
{
   Console::WriteLine( "Exception: Error Message = {0}", e->Message );
}

using System;
using System.Reflection;

public class TypeLoadException_TypeName
{
   public static void Main()
   {
      // Get a reference to the assembly mscorlib.dll, which is always
      // loaded. (System.String is defined in mscorlib.)
      Assembly mscorlib = typeof(string).Assembly;

      try
      {
         Console.WriteLine("Attempting to load a type that does not exist in mscorlib.");
         // The boolean parameter causes an exception to be thrown if the
         // type is not found.
         Type myType = mscorlib.GetType("System.NonExistentType", true);
      }
      catch (TypeLoadException ex)
      {
         // Display the name of the type that was not found, and the
         // exception message.
         Console.WriteLine("TypeLoadException was caught. Type = '{0}'.",
             ex.TypeName);
         Console.WriteLine("Error Message = '{0}'", ex.Message);
      }
   }
}
/*
 This code example produces output similar to the following:

Attempting to load a type that does not exist in mscorlib.
TypeLoadException was caught. Type = 'System.NonExistentType'
Error Message = 'Could not load type System.NonExistentType from assembly mscorl
ib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089.'
 */

Imports System.Reflection

Public Class Example
   Public Shared Sub Main()
      ' Get a reference to the assembly mscorlib.dll, which is always
      ' loaded. (System.String is defined in mscorlib.)
      Dim tString As Type = GetType(String)
      Dim mscorlib As [Assembly] = tString.Assembly

      Try
         Console.WriteLine("Attempting to load a type that does not exist in mscorlib.")
         ' The boolean parameter causes an exception to be thrown if the
         ' type is not found.
         Dim myType As Type = mscorlib.GetType("System.NonExistentType", True)
      Catch ex As TypeLoadException
         ' Display the name of the type that was not found, and the 
         ' exception message.
         Console.WriteLine("TypeLoadException was caught. Type = '{0}'.", _
             ex.TypeName)
         Console.WriteLine("Error Message = '{0}'", ex.Message)
      End Try
   End Sub 
End Class 
'
' This example produces output similar to the following:
'
'Attempting to load a type that does not exist in mscorlib.
'TypeLoadException was caught. Type = 'System.NonExistentType'
'Error Message = 'Could not load type System.NonExistentType from assembly mscorl
'ib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089.'

Notes to Inheritors

When overriding TypeName in a derived class, be sure to call the base class's TypeName property.

This property is read-only.